Every 27.322 days, the moon circles the Earth. The moon takes around 27 days to spin once on its axis.
1) B, Not 100% sure though
2)Building a rocket is a physical change technically its not changing its composition its just changing its appearance, the fuel for it causes a chemical change, there is an answer that is more clear, Grinding chalk into a fine powder only changes its shape which is a physical change.
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Explanation:
The five common acids are sulfuric acid, hydrochloric acid, nitric acid, lactic acid, and acetic acid.
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Answer:
The excitation energy
Explanation:
Excitation energy is the energy needed move an electron from a lower energy level (usually the ground state) to one of higher energy (an excited state).
The correct answer is:
B; A new substance forms.
Explanation:
A physical change, such as a state change or dissolving, does not produce a new substance, but an abundant change does. In a chemical reaction, the atoms and molecules that connect with each other are described as reactants. Chemical reactions happen when chemical bonds are broken and formed. If the molecules in a substance crash into each other with enough energy, some of the bonds in the molecules can break. The atoms can make new bonds with different atoms. A new substance forms.
